diff options
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-video.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-video.c | 2042 |
1 files changed, 0 insertions, 2042 deletions
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c deleted file mode 100644 index 8e61b2ca916..00000000000 --- a/drivers/media/video/em28xx/em28xx-video.c +++ /dev/null @@ -1,2042 +0,0 @@ -/* - em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB - video capture devices - - Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> - Markus Rechberger <mrechberger@gmail.com> - Mauro Carvalho Chehab <mchehab@infradead.org> - Sascha Sommer <saschasommer@freenet.de> - - Some parts based on SN9C10x PC Camera Controllers GPL driver made - by Luca Risolia <luca.risolia@studio.unibo.it> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/init.h> -#include <linux/list.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/bitmap.h> -#include <linux/usb.h> -#include <linux/i2c.h> -#include <linux/version.h> -#include <linux/mm.h> -#include <linux/mutex.h> - -#include "em28xx.h" -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-chip-ident.h> -#include <media/msp3400.h> -#include <media/tuner.h> - -#define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ - "Markus Rechberger <mrechberger@gmail.com>, " \ - "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ - "Sascha Sommer <saschasommer@freenet.de>" - -#define DRIVER_DESC "Empia em28xx based USB video device driver" -#define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 1) - -#define em28xx_videodbg(fmt, arg...) do {\ - if (video_debug) \ - printk(KERN_INFO "%s %s :"fmt, \ - dev->name, __func__ , ##arg); } while (0) - -static unsigned int isoc_debug; -module_param(isoc_debug, int, 0644); -MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); - -#define em28xx_isocdbg(fmt, arg...) \ -do {\ - if (isoc_debug) { \ - printk(KERN_INFO "%s %s :"fmt, \ - dev->name, __func__ , ##arg); \ - } \ - } while (0) - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); - -static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; -static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; -static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; - -module_param_array(video_nr, int, NULL, 0444); -module_param_array(vbi_nr, int, NULL, 0444); -module_param_array(radio_nr, int, NULL, 0444); -MODULE_PARM_DESC(video_nr, "video device numbers"); -MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); -MODULE_PARM_DESC(radio_nr, "radio device numbers"); - -static unsigned int video_debug; -module_param(video_debug, int, 0644); -MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); - -/* supported video standards */ -static struct em28xx_fmt format[] = { - { - .name = "16bpp YUY2, 4:2:2, packed", - .fourcc = V4L2_PIX_FMT_YUYV, - .depth = 16, - .reg = EM28XX_OUTFMT_YUV422_Y0UY1V, - }, -}; - -/* supported controls */ -/* Common to all boards */ -static struct v4l2_queryctrl em28xx_qctrl[] = { - { - .id = V4L2_CID_AUDIO_VOLUME, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Volume", - .minimum = 0x0, - .maximum = 0x1f, - .step = 0x1, - .default_value = 0x1f, - .flags = 0, - }, { - .id = V4L2_CID_AUDIO_MUTE, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Mute", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - .flags = 0, - } -}; - -/* ------------------------------------------------------------------ - DMA and thread functions - ------------------------------------------------------------------*/ - -/* - * Announces that a buffer were filled and request the next - */ -static inline void buffer_filled(struct em28xx *dev, - struct em28xx_dmaqueue *dma_q, - struct em28xx_buffer *buf) -{ - /* Advice that buffer was filled */ - em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i); - buf->vb.state = VIDEOBUF_DONE; - buf->vb.field_count++; - do_gettimeofday(&buf->vb.ts); - - dev->isoc_ctl.buf = NULL; - - list_del(&buf->vb.queue); - wake_up(&buf->vb.done); -} - -/* - * Identify the buffer header type and properly handles - */ -static void em28xx_copy_video(struct em28xx *dev, - struct em28xx_dmaqueue *dma_q, - struct em28xx_buffer *buf, - unsigned char *p, - unsigned char *outp, unsigned long len) -{ - void *fieldstart, *startwrite, *startread; - int linesdone, currlinedone, offset, lencopy, remain; - int bytesperline = dev->width << 1; - - if (dma_q->pos + len > buf->vb.size) - len = buf->vb.size - dma_q->pos; - - if (p[0] != 0x88 && p[0] != 0x22) { - em28xx_isocdbg("frame is not complete\n"); - len += 4; - } else - p += 4; - - startread = p; - remain = len; - - /* Interlaces frame */ - if (buf->top_field) - fieldstart = outp; - else - fieldstart = outp + bytesperline; - - linesdone = dma_q->pos / bytesperline; - currlinedone = dma_q->pos % bytesperline; - offset = linesdone * bytesperline * 2 + currlinedone; - startwrite = fieldstart + offset; - lencopy = bytesperline - currlinedone; - lencopy = lencopy > remain ? remain : lencopy; - - if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) { - em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n", - ((char *)startwrite + lencopy) - - ((char *)outp + buf->vb.size)); - lencopy = remain = (char *)outp + buf->vb.size - (char *)startwrite; - } - if (lencopy <= 0) - return; - memcpy(startwrite, startread, lencopy); - - remain -= lencopy; - - while (remain > 0) { - startwrite += lencopy + bytesperline; - startread += lencopy; - if (bytesperline > remain) - lencopy = remain; - else - lencopy = bytesperline; - - if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) { - em28xx_isocdbg("Overflow of %zi bytes past buffer end (2)\n", - ((char *)startwrite + lencopy) - - ((char *)outp + buf->vb.size)); - lencopy = remain = (char *)outp + buf->vb.size - - (char *)startwrite; - } - if (lencopy <= 0) - break; - - memcpy(startwrite, startread, lencopy); - - remain -= lencopy; - } - - dma_q->pos += len; -} - -static inline void print_err_status(struct em28xx *dev, - int packet, int status) -{ - char *errmsg = "Unknown"; - - switch (status) { - case -ENOENT: - errmsg = "unlinked synchronuously"; - break; - case -ECONNRESET: - errmsg = "unlinked asynchronuously"; - break; - case -ENOSR: - errmsg = "Buffer error (overrun)"; - break; - case -EPIPE: - errmsg = "Stalled (device not responding)"; - break; - case -EOVERFLOW: - errmsg = "Babble (bad cable?)"; - break; - case -EPROTO: - errmsg = "Bit-stuff error (bad cable?)"; - break; - case -EILSEQ: - errmsg = "CRC/Timeout (could be anything)"; - break; - case -ETIME: - errmsg = "Device does not respond"; - break; - } - if (packet < 0) { - em28xx_isocdbg("URB status %d [%s].\n", status, errmsg); - } else { - em28xx_isocdbg("URB packet %d, status %d [%s].\n", - packet, status, errmsg); - } -} - -/* - * video-buf generic routine to get the next available buffer - */ -static inline void get_next_buf(struct em28xx_dmaqueue *dma_q, - struct em28xx_buffer **buf) -{ - struct em28xx *dev = container_of(dma_q, struct em28xx, vidq); - char *outp; - - if (list_empty(&dma_q->active)) { - em28xx_isocdbg("No active queue to serve\n"); - dev->isoc_ctl.buf = NULL; - *buf = NULL; - return; - } - - /* Get the next buffer */ - *buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue); - - /* Cleans up buffer - Usefull for testing for frame/URB loss */ - outp = videobuf_to_vmalloc(&(*buf)->vb); - memset(outp, 0, (*buf)->vb.size); - - dev->isoc_ctl.buf = *buf; - - return; -} - -/* - * Controls the isoc copy of each urb packet - */ -static inline int em28xx_isoc_copy(struct em28xx *dev, struct urb *urb) -{ - struct em28xx_buffer *buf; - struct em28xx_dmaqueue *dma_q = urb->context; - unsigned char *outp = NULL; - int i, len = 0, rc = 1; - unsigned char *p; - - if (!dev) - return 0; - - if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) - return 0; - - if (urb->status < 0) { - print_err_status(dev, -1, urb->status); - if (urb->status == -ENOENT) - return 0; - } - - buf = dev->isoc_ctl.buf; - if (buf != NULL) - outp = videobuf_to_vmalloc(&buf->vb); - - for (i = 0; i < urb->number_of_packets; i++) { - int status = urb->iso_frame_desc[i].status; - - if (status < 0) { - print_err_status(dev, i, status); - if (urb->iso_frame_desc[i].status != -EPROTO) - continue; - } - - len = urb->iso_frame_desc[i].actual_length - 4; - - if (urb->iso_frame_desc[i].actual_length <= 0) { - /* em28xx_isocdbg("packet %d is empty",i); - spammy */ - continue; - } - if (urb->iso_frame_desc[i].actual_length > - dev->max_pkt_size) { - em28xx_isocdbg("packet bigger than packet size"); - continue; - } - - p = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - - /* FIXME: incomplete buffer checks where removed to make - logic simpler. Impacts of those changes should be evaluated - */ - if (p[0] == 0x33 && p[1] == 0x95 && p[2] == 0x00) { - em28xx_isocdbg("VBI HEADER!!!\n"); - /* FIXME: Should add vbi copy */ - continue; - } - if (p[0] == 0x22 && p[1] == 0x5a) { - em28xx_isocdbg("Video frame %d, length=%i, %s\n", p[2], - len, (p[2] & 1)? "odd" : "even"); - - if (!(p[2] & 1)) { - if (buf != NULL) - buffer_filled(dev, dma_q, buf); - get_next_buf(dma_q, &buf); - if (buf == NULL) - outp = NULL; - else - outp = videobuf_to_vmalloc(&buf->vb); - } - - if (buf != NULL) { - if (p[2] & 1) - buf->top_field = 0; - else - buf->top_field = 1; - } - - dma_q->pos = 0; - } - if (buf != NULL) - em28xx_copy_video(dev, dma_q, buf, p, outp, len); - } - return rc; -} - -/* ------------------------------------------------------------------ - Videobuf operations - ------------------------------------------------------------------*/ - -static int -buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) -{ - struct em28xx_fh *fh = vq->priv_data; - struct em28xx *dev = fh->dev; - struct v4l2_frequency f; - - *size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3; - - if (0 == *count) - *count = EM28XX_DEF_BUF; - - if (*count < EM28XX_MIN_BUF) - *count = EM28XX_MIN_BUF; - - /* Ask tuner to go to analog or radio mode */ - memset(&f, 0, sizeof(f)); - f.frequency = dev->ctl_freq; - f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; - - em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f); - - return 0; -} - -/* This is called *without* dev->slock held; please keep it that way */ -static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf) -{ - struct em28xx_fh *fh = vq->priv_data; - struct em28xx *dev = fh->dev; - unsigned long flags = 0; - if (in_interrupt()) - BUG(); - - /* We used to wait for the buffer to finish here, but this didn't work - because, as we were keeping the state as VIDEOBUF_QUEUED, - videobuf_queue_cancel marked it as finished for us. - (Also, it could wedge forever if the hardware was misconfigured.) - - This should be safe; by the time we get here, the buffer isn't - queued anymore. If we ever start marking the buffers as - VIDEOBUF_ACTIVE, it won't be, though. - */ - spin_lock_irqsave(&dev->slock, flags); - if (dev->isoc_ctl.buf == buf) - dev->isoc_ctl.buf = NULL; - spin_unlock_irqrestore(&dev->slock, flags); - - videobuf_vmalloc_free(&buf->vb); - buf->vb.state = VIDEOBUF_NEEDS_INIT; -} - -static int -buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, - enum v4l2_field field) -{ - struct em28xx_fh *fh = vq->priv_data; - struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); - struct em28xx *dev = fh->dev; - int rc = 0, urb_init = 0; - - buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth + 7) >> 3; - - if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) - return -EINVAL; - - buf->vb.width = dev->width; - buf->vb.height = dev->height; - buf->vb.field = field; - - if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { - rc = videobuf_iolock(vq, &buf->vb, NULL); - if (rc < 0) - goto fail; - } - - if (!dev->isoc_ctl.num_bufs) - urb_init = 1; - - if (urb_init) { - rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS, - EM28XX_NUM_BUFS, dev->max_pkt_size, - em28xx_isoc_copy); - if (rc < 0) - goto fail; - } - - buf->vb.state = VIDEOBUF_PREPARED; - return 0; - -fail: - free_buffer(vq, buf); - return rc; -} - -static void -buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) -{ - struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); - struct em28xx_fh *fh = vq->priv_data; - struct em28xx *dev = fh->dev; - struct em28xx_dmaqueue *vidq = &dev->vidq; - - buf->vb.state = VIDEOBUF_QUEUED; - list_add_tail(&buf->vb.queue, &vidq->active); - -} - -static void buffer_release(struct videobuf_queue *vq, - struct videobuf_buffer *vb) -{ - struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb); - struct em28xx_fh *fh = vq->priv_data; - struct em28xx *dev = (struct em28xx *)fh->dev; - - em28xx_isocdbg("em28xx: called buffer_release\n"); - - free_buffer(vq, buf); -} - -static struct videobuf_queue_ops em28xx_video_qops = { - .buf_setup = buffer_setup, - .buf_prepare = buffer_prepare, - .buf_queue = buffer_queue, - .buf_release = buffer_release, -}; - -/********************* v4l2 interface **************************************/ - -static void video_mux(struct em28xx *dev, int index) -{ - struct v4l2_routing route; - - route.input = INPUT(index)->vmux; - route.output = 0; - dev->ctl_input = index; - dev->ctl_ainput = INPUT(index)->amux; - dev->ctl_aoutput = INPUT(index)->aout; - - if (!dev->ctl_aoutput) - dev->ctl_aoutput = EM28XX_AOUT_MASTER; - - em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); - - if (dev->board.has_msp34xx) { - if (dev->i2s_speed) { - em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, - &dev->i2s_speed); - } - route.input = dev->ctl_ainput; - route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1); - /* Note: this is msp3400 specific */ - em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, - &route); - } - - em28xx_audio_analog_set(dev); -} - -/* Usage lock check functions */ -static int res_get(struct em28xx_fh *fh) -{ - struct em28xx *dev = fh->dev; - int rc = 0; - - /* This instance already has stream_on */ - if (fh->stream_on) - return rc; - - if (dev->stream_on) - return -EBUSY; - - dev->stream_on = 1; - fh->stream_on = 1; - return rc; -} - -static int res_check(struct em28xx_fh *fh) -{ - return (fh->stream_on); -} - -static void res_free(struct em28xx_fh *fh) -{ - struct em28xx *dev = fh->dev; - - fh->stream_on = 0; - dev->stream_on = 0; -} - -/* - * em28xx_get_ctrl() - * return the current saturation, brightness or contrast, mute state - */ -static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) -{ - switch (ctrl->id) { - case V4L2_CID_AUDIO_MUTE: - ctrl->value = dev->mute; - return 0; - case V4L2_CID_AUDIO_VOLUME: - ctrl->value = dev->volume; - return 0; - default: - return -EINVAL; - } -} - -/* - * em28xx_set_ctrl() - * mute or set new saturation, brightness or contrast - */ -static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) -{ - switch (ctrl->id) { - case V4L2_CID_AUDIO_MUTE: - if (ctrl->value != dev->mute) { - dev->mute = ctrl->value; - return em28xx_audio_analog_set(dev); - } - return 0; - case V4L2_CID_AUDIO_VOLUME: - dev->volume = ctrl->value; - return em28xx_audio_analog_set(dev); - default: - return -EINVAL; - } -} - -static int check_dev(struct em28xx *dev) -{ - if (dev->state & DEV_DISCONNECTED) { - em28xx_errdev("v4l2 ioctl: device not present\n"); - return -ENODEV; - } - - if (dev->state & DEV_MISCONFIGURED) { - em28xx_errdev("v4l2 ioctl: device is misconfigured; " - "close and open it again\n"); - return -EIO; - } - return 0; -} - -static void get_scale(struct em28xx *dev, - unsigned int width, unsigned int height, - unsigned int *hscale, unsigned int *vscale) -{ - unsigned int maxw = norm_maxw(dev); - unsigned int maxh = norm_maxh(dev); - - *hscale = (((unsigned long)maxw) << 12) / width - 4096L; - if (*hscale >= 0x4000) - *hscale = 0x3fff; - - *vscale = (((unsigned long)maxh) << 12) / height - 4096L; - if (*vscale >= 0x4000) - *vscale = 0x3fff; -} - -/* ------------------------------------------------------------------ - IOCTL vidioc handling - ------------------------------------------------------------------*/ - -static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - mutex_lock(&dev->lock); - - f->fmt.pix.width = dev->width; - f->fmt.pix.height = dev->height; - f->fmt.pix.pixelformat = dev->format->fourcc; - f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3; - f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height; - f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; - - /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ - f->fmt.pix.field = dev->interlaced ? - V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; - - mutex_unlock(&dev->lock); - return 0; -} - -static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc) -{ - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(format); i++) - if (format[i].fourcc == fourcc) - return &format[i]; - - return NULL; -} - -static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int width = f->fmt.pix.width; - int height = f->fmt.pix.height; - unsigned int maxw = norm_maxw(dev); - unsigned int maxh = norm_maxh(dev); - unsigned int hscale, vscale; - struct em28xx_fmt *fmt; - - fmt = format_by_fourcc(f->fmt.pix.pixelformat); - if (!fmt) { - em28xx_videodbg("Fourcc format (%08x) invalid.\n", - f->fmt.pix.pixelformat); - return -EINVAL; - } - - /* width must even because of the YUYV format - height must be even because of interlacing */ - height &= 0xfffe; - width &= 0xfffe; - - if (unlikely(height < 32)) - height = 32; - if (unlikely(height > maxh)) - height = maxh; - if (unlikely(width < 48)) - width = 48; - if (unlikely(width > maxw)) - width = maxw; - - if (dev->board.is_em2800) { - /* the em2800 can only scale down to 50% */ - if (height % (maxh / 2)) - height = maxh; - if (width % (maxw / 2)) - width = maxw; - /* according to empiatech support */ - /* the MaxPacketSize is to small to support */ - /* framesizes larger than 640x480 @ 30 fps */ - /* or 640x576 @ 25 fps. As this would cut */ - /* of a part of the image we prefer */ - /* 360x576 or 360x480 for now */ - if (width == maxw && height == maxh) - width /= 2; - } - - get_scale(dev, width, height, &hscale, &vscale); - - width = (((unsigned long)maxw) << 12) / (hscale + 4096L); - height = (((unsigned long)maxh) << 12) / (vscale + 4096L); - - f->fmt.pix.width = width; - f->fmt.pix.height = height; - f->fmt.pix.pixelformat = fmt->fourcc; - f->fmt.pix.bytesperline = (dev->width * fmt->depth + 7) >> 3; - f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; - f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; - f->fmt.pix.field = V4L2_FIELD_INTERLACED; - - return 0; -} - -static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - struct em28xx_fmt *fmt; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - - vidioc_try_fmt_vid_cap(file, priv, f); - - fmt = format_by_fourcc(f->fmt.pix.pixelformat); - if (!fmt) { - rc = -EINVAL; - goto out; - } - - if (videobuf_queue_is_busy(&fh->vb_vidq)) { - em28xx_errdev("%s queue busy\n", __func__); - rc = -EBUSY; - goto out; - } - - if (dev->stream_on && !fh->stream_on) { - em28xx_errdev("%s device in use by another fh\n", __func__); - rc = -EBUSY; - goto out; - } - - /* set new image size */ - dev->width = f->fmt.pix.width; - dev->height = f->fmt.pix.height; - dev->format = fmt; - get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); - - em28xx_set_alternate(dev); - em28xx_resolution_set(dev); - - rc = 0; - -out: - mutex_unlock(&dev->lock); - return rc; -} - -static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - struct v4l2_format f; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - dev->norm = *norm; - - /* Adjusts width/height, if needed */ - f.fmt.pix.width = dev->width; - f.fmt.pix.height = dev->height; - vidioc_try_fmt_vid_cap(file, priv, &f); - - /* set new image size */ - dev->width = f.fmt.pix.width; - dev->height = f.fmt.pix.height; - get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); - - em28xx_resolution_set(dev); - em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm); - - mutex_unlock(&dev->lock); - return 0; -} - -static const char *iname[] = { - [EM28XX_VMUX_COMPOSITE1] = "Composite1", - [EM28XX_VMUX_COMPOSITE2] = "Composite2", - [EM28XX_VMUX_COMPOSITE3] = "Composite3", - [EM28XX_VMUX_COMPOSITE4] = "Composite4", - [EM28XX_VMUX_SVIDEO] = "S-Video", - [EM28XX_VMUX_TELEVISION] = "Television", - [EM28XX_VMUX_CABLE] = "Cable TV", - [EM28XX_VMUX_DVB] = "DVB", - [EM28XX_VMUX_DEBUG] = "for debug only", -}; - -static int vidioc_enum_input(struct file *file, void *priv, - struct v4l2_input *i) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - unsigned int n; - - n = i->index; - if (n >= MAX_EM28XX_INPUT) - return -EINVAL; - if (0 == INPUT(n)->type) - return -EINVAL; - - i->index = n; - i->type = V4L2_INPUT_TYPE_CAMERA; - - strcpy(i->name, iname[INPUT(n)->type]); - - if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || - (EM28XX_VMUX_CABLE == INPUT(n)->type)) - i->type = V4L2_INPUT_TYPE_TUNER; - - i->std = dev->vdev->tvnorms; - - return 0; -} - -static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - *i = dev->ctl_input; - - return 0; -} - -static int vidioc_s_input(struct file *file, void *priv, unsigned int i) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - if (i >= MAX_EM28XX_INPUT) - return -EINVAL; - if (0 == INPUT(i)->type) - return -EINVAL; - - dev->ctl_input = i; - - mutex_lock(&dev->lock); - video_mux(dev, dev->ctl_input); - mutex_unlock(&dev->lock); - return 0; -} - -static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - switch (a->index) { - case EM28XX_AMUX_VIDEO: - strcpy(a->name, "Television"); - break; - case EM28XX_AMUX_LINE_IN: - strcpy(a->name, "Line In"); - break; - case EM28XX_AMUX_VIDEO2: - strcpy(a->name, "Television alt"); - break; - case EM28XX_AMUX_PHONE: - strcpy(a->name, "Phone"); - break; - case EM28XX_AMUX_MIC: - strcpy(a->name, "Mic"); - break; - case EM28XX_AMUX_CD: - strcpy(a->name, "CD"); - break; - case EM28XX_AMUX_AUX: - strcpy(a->name, "Aux"); - break; - case EM28XX_AMUX_PCM_OUT: - strcpy(a->name, "PCM"); - break; - default: - return -EINVAL; - } - - a->index = dev->ctl_ainput; - a->capability = V4L2_AUDCAP_STEREO; - - return 0; -} - -static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - - if (a->index >= MAX_EM28XX_INPUT) - return -EINVAL; - if (0 == INPUT(a->index)->type) - return -EINVAL; - - mutex_lock(&dev->lock); - - dev->ctl_ainput = INPUT(a->index)->amux; - dev->ctl_aoutput = INPUT(a->index)->aout; - - if (!dev->ctl_aoutput) - dev->ctl_aoutput = EM28XX_AOUT_MASTER; - - mutex_unlock(&dev->lock); - return 0; -} - -static int vidioc_queryctrl(struct file *file, void *priv, - struct v4l2_queryctrl *qc) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int id = qc->id; - int i; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - memset(qc, 0, sizeof(*qc)); - - qc->id = id; - - if (!dev->board.has_msp34xx) { - for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { - if (qc->id && qc->id == em28xx_qctrl[i].id) { - memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); - return 0; - } - } - } - mutex_lock(&dev->lock); - em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc); - mutex_unlock(&dev->lock); - - if (qc->type) - return 0; - else - return -EINVAL; -} - -static int vidioc_g_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - rc = 0; - - mutex_lock(&dev->lock); - - if (dev->board.has_msp34xx) - em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl); - else - rc = em28xx_get_ctrl(dev, ctrl); - - mutex_unlock(&dev->lock); - return rc; -} - -static int vidioc_s_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - u8 i; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - - if (dev->board.has_msp34xx) - em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); - else { - rc = 1; - for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { - if (ctrl->id == em28xx_qctrl[i].id) { - if (ctrl->value < em28xx_qctrl[i].minimum || - ctrl->value > em28xx_qctrl[i].maximum) { - rc = -ERANGE; - break; - } - - rc = em28xx_set_ctrl(dev, ctrl); - break; - } - } - } - - /* Control not found - try to send it to the attached devices */ - if (rc == 1) { - em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); - rc = 0; - } - - mutex_unlock(&dev->lock); - return rc; -} - -static int vidioc_g_tuner(struct file *file, void *priv, - struct v4l2_tuner *t) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - if (0 != t->index) - return -EINVAL; - - strcpy(t->name, "Tuner"); - - mutex_lock(&dev->lock); - - em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); - - mutex_unlock(&dev->lock); - return 0; -} - -static int vidioc_s_tuner(struct file *file, void *priv, - struct v4l2_tuner *t) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - if (0 != t->index) - return -EINVAL; - - mutex_lock(&dev->lock); - - em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); - - mutex_unlock(&dev->lock); - return 0; -} - -static int vidioc_g_frequency(struct file *file, void *priv, - struct v4l2_frequency *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - mutex_lock(&dev->lock); - f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; - f->frequency = dev->ctl_freq; - mutex_unlock(&dev->lock); - - return 0; -} - -static int vidioc_s_frequency(struct file *file, void *priv, - struct v4l2_frequency *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - if (0 != f->tuner) - return -EINVAL; - - if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV)) - return -EINVAL; - if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO)) - return -EINVAL; - - mutex_lock(&dev->lock); - - dev->ctl_freq = f->frequency; - em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); - - mutex_unlock(&dev->lock); - - return 0; -} - -#ifdef CONFIG_VIDEO_ADV_DEBUG -static int em28xx_reg_len(int reg) -{ - switch (reg) { - case EM28XX_R40_AC97LSB: - case EM28XX_R30_HSCALELOW: - case EM28XX_R32_VSCALELOW: - return 2; - default: - return 1; - } -} - -static int vidioc_g_chip_ident(struct file *file, void *priv, - struct v4l2_dbg_chip_ident *chip) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - chip->ident = V4L2_IDENT_NONE; - chip->revision = 0; - - em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_CHIP_IDENT, chip); - - return 0; -} - - -static int vidioc_g_register(struct file *file, void *priv, - struct v4l2_dbg_register *reg) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int ret; - - switch (reg->match.type) { - case V4L2_CHIP_MATCH_AC97: - mutex_lock(&dev->lock); - ret = em28xx_read_ac97(dev, reg->reg); - mutex_unlock(&dev->lock); - if (ret < 0) - return ret; - - reg->val = ret; - reg->size = 1; - return 0; - case V4L2_CHIP_MATCH_I2C_DRIVER: - em28xx_i2c_call_clients(dev, VIDIOC_DBG_G_REGISTER, reg); - return 0; - case V4L2_CHIP_MATCH_I2C_ADDR: - /* Not supported yet */ - return -EINVAL; - default: - if (!v4l2_chip_match_host(®->match)) - return -EINVAL; - } - - /* Match host */ - reg->size = em28xx_reg_len(reg->reg); - if (reg->size == 1) { - mutex_lock(&dev->lock); - ret = em28xx_read_reg(dev, reg->reg); - mutex_unlock(&dev->lock); - - if (ret < 0) - return ret; - - reg->val = ret; - } else { - __le16 val = 0; - mutex_lock(&dev->lock); - ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, - reg->reg, (char *)&val, 2); - mutex_unlock(&dev->lock); - if (ret < 0) - return ret; - - reg->val = le16_to_cpu(val); - } - - return 0; -} - -static int vidioc_s_register(struct file *file, void *priv, - struct v4l2_dbg_register *reg) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - __le16 buf; - int rc; - - switch (reg->match.type) { - case V4L2_CHIP_MATCH_AC97: - mutex_lock(&dev->lock); - rc = em28xx_write_ac97(dev, reg->reg, reg->val); - mutex_unlock(&dev->lock); - - return rc; - case V4L2_CHIP_MATCH_I2C_DRIVER: - em28xx_i2c_call_clients(dev, VIDIOC_DBG_S_REGISTER, reg); - return 0; - case V4L2_CHIP_MATCH_I2C_ADDR: - /* Not supported yet */ - return -EINVAL; - default: - if (!v4l2_chip_match_host(®->match)) - return -EINVAL; - } - - /* Match host */ - buf = cpu_to_le16(reg->val); - - mutex_lock(&dev->lock); - rc = em28xx_write_regs(dev, reg->reg, (char *)&buf, - em28xx_reg_len(reg->reg)); - mutex_unlock(&dev->lock); - - return rc; -} -#endif - - -static int vidioc_cropcap(struct file *file, void *priv, - struct v4l2_cropcap *cc) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - cc->bounds.left = 0; - cc->bounds.top = 0; - cc->bounds.width = dev->width; - cc->bounds.height = dev->height; - cc->defrect = cc->bounds; - cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ - cc->pixelaspect.denominator = 59; - - return 0; -} - -static int vidioc_streamon(struct file *file, void *priv, - enum v4l2_buf_type type) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - - mutex_lock(&dev->lock); - rc = res_get(fh); - - if (likely(rc >= 0)) - rc = videobuf_streamon(&fh->vb_vidq); - - mutex_unlock(&dev->lock); - - return rc; -} - -static int vidioc_streamoff(struct file *file, void *priv, - enum v4l2_buf_type type) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (type != fh->type) - return -EINVAL; - - mutex_lock(&dev->lock); - - videobuf_streamoff(&fh->vb_vidq); - res_free(fh); - - mutex_unlock(&dev->lock); - - return 0; -} - -static int vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - - strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); - strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); - strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info)); - - cap->version = EM28XX_VERSION_CODE; - - cap->capabilities = - V4L2_CAP_SLICED_VBI_CAPTURE | - V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_AUDIO | - V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; - - if (dev->tuner_type != TUNER_ABSENT) - cap->capabilities |= V4L2_CAP_TUNER; - - return 0; -} - -static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - if (unlikely(f->index >= ARRAY_SIZE(format))) - return -EINVAL; - - strlcpy(f->description, format[f->index].name, sizeof(f->description)); - f->pixelformat = format[f->index].fourcc; - - return 0; -} - -/* Sliced VBI ioctls */ -static int vidioc_g_fmt_sliced_vbi_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - - f->fmt.sliced.service_set = 0; - - em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); - - if (f->fmt.sliced.service_set == 0) - rc = -EINVAL; - - mutex_unlock(&dev->lock); - return rc; -} - -static int vidioc_try_set_sliced_vbi_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); - mutex_unlock(&dev->lock); - - if (f->fmt.sliced.service_set == 0) - return -EINVAL; - - return 0; -} - - -static int vidioc_reqbufs(struct file *file, void *priv, - struct v4l2_requestbuffers *rb) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - return (videobuf_reqbufs(&fh->vb_vidq, rb)); -} - -static int vidioc_querybuf(struct file *file, void *priv, - struct v4l2_buffer *b) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - return (videobuf_querybuf(&fh->vb_vidq, b)); -} - -static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - return (videobuf_qbuf(&fh->vb_vidq, b)); -} - -static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) -{ - struct em28xx_fh *fh = priv; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - return (videobuf_dqbuf(&fh->vb_vidq, b, - file->f_flags & O_NONBLOCK)); -} - -#ifdef CONFIG_VIDEO_V4L1_COMPAT -static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf) -{ - struct em28xx_fh *fh = priv; - - return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8); -} -#endif - - -/* ----------------------------------------------------------- */ -/* RADIO ESPECIFIC IOCTLS */ -/* ----------------------------------------------------------- */ - -static int radio_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; - - strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); - strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); - strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info)); - - cap->version = EM28XX_VERSION_CODE; - cap->capabilities = V4L2_CAP_TUNER; - return 0; -} - -static int radio_g_tuner(struct file *file, void *priv, - struct v4l2_tuner *t) -{ - struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; - - if (unlikely(t->index > 0)) - return -EINVAL; - - strcpy(t->name, "Radio"); - t->type = V4L2_TUNER_RADIO; - - mutex_lock(&dev->lock); - em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); - mutex_unlock(&dev->lock); - - return 0; -} - -static int radio_enum_input(struct file *file, void *priv, - struct v4l2_input *i) -{ - if (i->index != 0) - return -EINVAL; - strcpy(i->name, "Radio"); - i->type = V4L2_INPUT_TYPE_TUNER; - - return 0; -} - -static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a) -{ - if (unlikely(a->index)) - return -EINVAL; - - strcpy(a->name, "Radio"); - return 0; -} - -static int radio_s_tuner(struct file *file, void *priv, - struct v4l2_tuner *t) -{ - struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; - - if (0 != t->index) - return -EINVAL; - - mutex_lock(&dev->lock); - em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); - mutex_unlock(&dev->lock); - - return 0; -} - -static int radio_s_audio(struct file *file, void *fh, - struct v4l2_audio *a) -{ - return 0; -} - -static int radio_s_input(struct file *file, void *fh, unsigned int i) -{ - return 0; -} - -static int radio_queryctrl(struct file *file, void *priv, - struct v4l2_queryctrl *qc) -{ - int i; - - if (qc->id < V4L2_CID_BASE || - qc->id >= V4L2_CID_LASTP1) - return -EINVAL; - - for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { - if (qc->id && qc->id == em28xx_qctrl[i].id) { - memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); - return 0; - } - } - - return -EINVAL; -} - -/* - * em28xx_v4l2_open() - * inits the device and starts isoc transfer - */ -static int em28xx_v4l2_open(struct file *filp) -{ - int minor = video_devdata(filp)->minor; - int errCode = 0, radio; - struct em28xx *dev; - enum v4l2_buf_type fh_type; - struct em28xx_fh *fh; - - dev = em28xx_get_device(minor, &fh_type, &radio); - - if (NULL == dev) - return -ENODEV; - - mutex_lock(&dev->lock); - - em28xx_videodbg("open minor=%d type=%s users=%d\n", - minor, v4l2_type_names[fh_type], dev->users); - - - fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); - if (!fh) { - em28xx_errdev("em28xx-video.c: Out of memory?!\n"); - mutex_unlock(&dev->lock); - return -ENOMEM; - } - fh->dev = dev; - fh->radio = radio; - fh->type = fh_type; - filp->private_data = fh; - - if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { - dev->width = norm_maxw(dev); - dev->height = norm_maxh(dev); - dev->hscale = 0; - dev->vscale = 0; - - em28xx_set_mode(dev, EM28XX_ANALOG_MODE); - em28xx_set_alternate(dev); - em28xx_resolution_set(dev); - - /* Needed, since GPIO might have disabled power of - some i2c device - */ - em28xx_wake_i2c(dev); - - } - if (fh->radio) { - em28xx_videodbg("video_open: setting radio device\n"); - em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL); - } - - dev->users++; - - videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops, - NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, - sizeof(struct em28xx_buffer), fh); - - mutex_unlock(&dev->lock); - - return errCode; -} - -/* - * em28xx_realease_resources() - * unregisters the v4l2,i2c and usb devices - * called when the device gets disconected or at module unload -*/ -void em28xx_release_analog_resources(struct em28xx *dev) -{ - - /*FIXME: I2C IR should be disconnected */ - - if (dev->radio_dev) { - if (-1 != dev->radio_dev->minor) - video_unregister_device(dev->radio_dev); - else - video_device_release(dev->radio_dev); - dev->radio_dev = NULL; - } - if (dev->vbi_dev) { - em28xx_info("V4L2 device /dev/vbi%d deregistered\n", - dev->vbi_dev->num); - if (-1 != dev->vbi_dev->minor) - video_unregister_device(dev->vbi_dev); - else - video_device_release(dev->vbi_dev); - dev->vbi_dev = NULL; - } - if (dev->vdev) { - em28xx_info("V4L2 device /dev/video%d deregistered\n", - dev->vdev->num); - if (-1 != dev->vdev->minor) - video_unregister_device(dev->vdev); - else - video_device_release(dev->vdev); - dev->vdev = NULL; - } -} - -/* - * em28xx_v4l2_close() - * stops streaming and deallocates all resources allocated by the v4l2 - * calls and ioctls - */ -static int em28xx_v4l2_close(struct file *filp) -{ - struct em28xx_fh *fh = filp->private_data; - struct em28xx *dev = fh->dev; - int errCode; - - em28xx_videodbg("users=%d\n", dev->users); - - - mutex_lock(&dev->lock); - if (res_check(fh)) - res_free(fh); - - if (dev->users == 1) { - videobuf_stop(&fh->vb_vidq); - videobuf_mmap_free(&fh->vb_vidq); - - /* the device is already disconnect, - free the remaining resources */ - if (dev->state & DEV_DISCONNECTED) { - em28xx_release_resources(dev); - mutex_unlock(&dev->lock); - kfree(dev); - return 0; - } - - /* Save some power by putting tuner to sleep */ - em28xx_i2c_call_clients(dev, TUNER_SET_STANDBY, NULL); - - /* do this before setting alternate! */ - em28xx_uninit_isoc(dev); - em28xx_set_mode(dev, EM28XX_SUSPEND); - - /* set alternate 0 */ - dev->alt = 0; - em28xx_videodbg("setting alternate 0\n"); - errCode = usb_set_interface(dev->udev, 0, 0); - if (errCode < 0) { - em28xx_errdev("cannot change alternate number to " - "0 (error=%i)\n", errCode); - } - } - kfree(fh); - dev->users--; - wake_up_interruptible_nr(&dev->open, 1); - mutex_unlock(&dev->lock); - return 0; -} - -/* - * em28xx_v4l2_read() - * will allocate buffers when called for the first time - */ -static ssize_t -em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count, - loff_t *pos) -{ - struct em28xx_fh *fh = filp->private_data; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - /* FIXME: read() is not prepared to allow changing the video - resolution while streaming. Seems a bug at em28xx_set_fmt - */ - - if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { - mutex_lock(&dev->lock); - rc = res_get(fh); - mutex_unlock(&dev->lock); - - if (unlikely(rc < 0)) - return rc; - - return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0, - filp->f_flags & O_NONBLOCK); - } - return 0; -} - -/* - * em28xx_v4l2_poll() - * will allocate buffers when called for the first time - */ -static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) -{ - struct em28xx_fh *fh = filp->private_data; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - rc = res_get(fh); - mutex_unlock(&dev->lock); - - if (unlikely(rc < 0)) - return POLLERR; - - if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) - return POLLERR; - - return videobuf_poll_stream(filp, &fh->vb_vidq, wait); -} - -/* - * em28xx_v4l2_mmap() - */ -static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct em28xx_fh *fh = filp->private_data; - struct em28xx *dev = fh->dev; - int rc; - - rc = check_dev(dev); - if (rc < 0) - return rc; - - mutex_lock(&dev->lock); - rc = res_get(fh); - mutex_unlock(&dev->lock); - - if (unlikely(rc < 0)) - return rc; - - rc = videobuf_mmap_mapper(&fh->vb_vidq, vma); - - em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n", - (unsigned long)vma->vm_start, - (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, - rc); - - return rc; -} - -static const struct v4l2_file_operations em28xx_v4l_fops = { - .owner = THIS_MODULE, - .open = em28xx_v4l2_open, - .release = em28xx_v4l2_close, - .read = em28xx_v4l2_read, - .poll = em28xx_v4l2_poll, - .mmap = em28xx_v4l2_mmap, - .ioctl = video_ioctl2, -}; - -static const struct v4l2_ioctl_ops video_ioctl_ops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, - .vidioc_g_audio = vidioc_g_audio, - .vidioc_s_audio = vidioc_s_audio, - .vidioc_cropcap = vidioc_cropcap, - - .vidioc_g_fmt_sliced_vbi_cap = vidioc_g_fmt_sliced_vbi_cap, - .vidioc_try_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, - .vidioc_s_fmt_sliced_vbi_cap = vidioc_try_set_sliced_vbi_cap, - - .vidioc_reqbufs = vidioc_reqbufs, - .vidioc_querybuf = vidioc_querybuf, - .vidioc_qbuf = vidioc_qbuf, - .vidioc_dqbuf = vidioc_dqbuf, - .vidioc_s_std = vidioc_s_std, - .vidioc_enum_input = vidioc_enum_input, - .vidioc_g_input = vidioc_g_input, - .vidioc_s_input = vidioc_s_input, - .vidioc_queryctrl = vidioc_queryctrl, - .vidioc_g_ctrl = vidioc_g_ctrl, - .vidioc_s_ctrl = vidioc_s_ctrl, - .vidioc_streamon = vidioc_streamon, - .vidioc_streamoff = vidioc_streamoff, - .vidioc_g_tuner = vidioc_g_tuner, - .vidioc_s_tuner = vidioc_s_tuner, - .vidioc_g_frequency = vidioc_g_frequency, - .vidioc_s_frequency = vidioc_s_frequency, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .vidioc_g_register = vidioc_g_register, - .vidioc_s_register = vidioc_s_register, - .vidioc_g_chip_ident = vidioc_g_chip_ident, -#endif -#ifdef CONFIG_VIDEO_V4L1_COMPAT - .vidiocgmbuf = vidiocgmbuf, -#endif -}; - -static const struct video_device em28xx_video_template = { - .fops = &em28xx_v4l_fops, - .release = video_device_release, - .ioctl_ops = &video_ioctl_ops, - - .minor = -1, - - .tvnorms = V4L2_STD_ALL, - .current_norm = V4L2_STD_PAL, -}; - -static const struct v4l2_file_operations radio_fops = { - .owner = THIS_MODULE, - .open = em28xx_v4l2_open, - .release = em28xx_v4l2_close, - .ioctl = video_ioctl2, -}; - -static const struct v4l2_ioctl_ops radio_ioctl_ops = { - .vidioc_querycap = radio_querycap, - .vidioc_g_tuner = radio_g_tuner, - .vidioc_enum_input = radio_enum_input, - .vidioc_g_audio = radio_g_audio, - .vidioc_s_tuner = radio_s_tuner, - .vidioc_s_audio = radio_s_audio, - .vidioc_s_input = radio_s_input, - .vidioc_queryctrl = radio_queryctrl, - .vidioc_g_ctrl = vidioc_g_ctrl, - .vidioc_s_ctrl = vidioc_s_ctrl, - .vidioc_g_frequency = vidioc_g_frequency, - .vidioc_s_frequency = vidioc_s_frequency, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .vidioc_g_register = vidioc_g_register, - .vidioc_s_register = vidioc_s_register, -#endif -}; - -static struct video_device em28xx_radio_template = { - .name = "em28xx-radio", - .fops = &radio_fops, - .ioctl_ops = &radio_ioctl_ops, - .minor = -1, -}; - -/******************************** usb interface ******************************/ - - - -static struct video_device *em28xx_vdev_init(struct em28xx *dev, - const struct video_device *template, - const char *type_name) -{ - struct video_device *vfd; - - vfd = video_device_alloc(); - if (NULL == vfd) - return NULL; - *vfd = *template; - vfd->minor = -1; - vfd->parent = &dev->udev->dev; - vfd->release = video_device_release; - vfd->debug = video_debug; - - snprintf(vfd->name, sizeof(vfd->name), "%s %s", - dev->name, type_name); - - return vfd; -} - -int em28xx_register_analog_devices(struct em28xx *dev) -{ - u8 val; - int ret; - - printk(KERN_INFO "%s: v4l2 driver version %d.%d.%d\n", - dev->name, - (EM28XX_VERSION_CODE >> 16) & 0xff, - (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); - - /* set default norm */ - dev->norm = em28xx_video_template.current_norm; - dev->width = norm_maxw(dev); - dev->height = norm_maxh(dev); - dev->interlaced = EM28XX_INTERLACED_DEFAULT; - dev->hscale = 0; - dev->vscale = 0; - dev->ctl_input = 0; - - /* Analog specific initialization */ - dev->format = &format[0]; - video_mux(dev, dev->ctl_input); - - /* Audio defaults */ - dev->mute = 1; - dev->volume = 0x1f; - - /* enable vbi capturing */ - -/* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ - val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); - em28xx_write_reg(dev, EM28XX_R0F_XCLK, (EM28XX_XCLK_AUDIO_UNMUTE | val)); - em28xx_write_reg(dev, EM28XX_R11_VINCTRL, 0x51); - - em28xx_set_outfmt(dev); - em28xx_colorlevels_set_default(dev); - em28xx_compression_disable(dev); - - /* allocate and fill video video_device struct */ - dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, "video"); - if (!dev->vdev) { - em28xx_errdev("cannot allocate video_device.\n"); - return -ENODEV; - } - - /* register v4l2 video video_device */ - ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER, - video_nr[dev->devno]); - if (ret) { - em28xx_errdev("unable to register video device (error=%i).\n", - ret); - return ret; - } - - /* Allocate and fill vbi video_device struct */ - dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, "vbi"); - - /* register v4l2 vbi video_device */ - ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI, - vbi_nr[dev->devno]); - if (ret < 0) { - em28xx_errdev("unable to register vbi device\n"); - return ret; - } - - if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { - dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, "radio"); - if (!dev->radio_dev) { - em28xx_errdev("cannot allocate video_device.\n"); - return -ENODEV; - } - ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, - radio_nr[dev->devno]); - if (ret < 0) { - em28xx_errdev("can't register radio device\n"); - return ret; - } - em28xx_info("Registered radio device as /dev/radio%d\n", - dev->radio_dev->num); - } - - em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", - dev->vdev->num, dev->vbi_dev->num); - - return 0; -} |